Muscle

Which of the following structures maintain the integrity of myosin bands

M-line

Z-line

H-band

Actin filament

The following statements concerning skeletal muscle cells are correct EXCEPT

The flat nuclei are usually found at the periphery of the cell.

Multinucliation of cells are resulted from the fusion of the mononucleaed myoblasts.

In most instances, individual muscle cells do not extend from one end of a muscle to the other.

Capillaries form a network that runs between and parallel to the muscle fibers.

The connective tissue around each muscle fiber is called the perimysium

The following statements concerning the myofibrils of the skeletal muscles are correct EXCEPT

They are long cylindrical filamentous bundle that fill the sarcoplasm

They contain thick and thin filaments,that lie obliquely, at right angle to their long axis

They run parallel to the long axis of the muscle fibers

They consist of an end-to-end chainlike arrangement of sarcomeres

The in-register arrangement of myosin and actin filaments within sarcomers exhibit transverse striations.

In the cardiac muscle T–tubules are found at the level of the

M–line

A–band

H–band

Z–line

The basic tissue which is made of spindle shape cells with central oval nuclei arranged in layers is

Smooth muscle

Cardiac muscle

Dense regular connective tissue

All of the listed

Intercalated discs are found in:

During muscle contraction, one of the following does not occur in the sarcomere:

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